{"instruction": "You are an expert in named entity recognition. Please extract entities that match the schema definition from the input. Return an empty list if the entity type does not exist. Please respond in the format of a JSON string.", "schema": ["Chemical"], "input": "Materials and methods : Three modified - release formulations of aminophylline consisted of Carbopol (R) 971P / HPMC K4M ( F - I ) , and HPMC K100M ( F - II ) or HPMC K4M ( F - III ) were used ."}
{"Chemical": ["aminophylline", "Carbopol"]}